Chat
AlexWalk by the river this Saturday?
YouSounds good. Shall we meet at ten?
SamI’ll bring coffee.
Stay in touch.
Talk about your day, share an idea, or work out a plan together.
A space to share
Your conversations,
photos, and plans.
Keep them together with the people you choose.
Private, encrypted, and stored on your devices.
No account to create. No ads. No tracking.
Your life belongs to you.
Your attention isn’t something to sell. Your relationships aren’t data to mine. You shouldn’t have to give companies or governments a window into your private life just to stay in touch.
Whispurr puts more of that control in your hands: keep your data on your devices, choose who you connect with, and decide whether to use cloud services. More room to speak freely and live on your own terms.
Private conversations.
On your devices.
iOSAndroidDesktop
Whispurr is a secure, peer-to-peer app for messages, photos, and shared plans, available for iOS, Android, and desktop. It’s local-first: your data lives on your devices, and syncs with the people you choose. Your conversations are end-to-end encrypted, with no central server required to store or manage them.
Exchange an invite.
Keep the connection.
Start a chat with a friend, your family, or someone you’ve just met.
The invitation has done its job.
Both devices remember the secure connection. Next time, just open your chat.
A QR invite carries the cryptographic address your devices use to establish a secure connection. Once you’ve connected, Whispurr remembers who you’re chatting with. Scan once, stay connected—you don’t need to exchange codes each time you talk.
Different parts of life.
Different personas.
Keep work, friends, and family in their own chat lists. Create a persona for whatever fits your life.
Example personas and chats. Choose your own names and profiles.
A persona for whatever you’re into.
A cycling club, a side project, or a community group. Give it a name and keep its chats together.
Each persona has its own profile and chat list. Choose the persona you want to use when starting or joining a chat. Switch personas to move between the different parts of your life.
Your chats.
On your computer, too.
Link your desktop from a phone you already trust. Then chat and upload files from either device.
Add files from your computer.
Choose files on your desktop and share them in a chat. Your linked devices stay in sync.
Your phone establishes the trust. Scan the account QR displayed on your desktop, then approve it on your phone. The computer joins your account as a linked device, ready for the same chats, shared history, and encrypted files.
Across the world.
Or across the room.
Enable the connections that fit where you are. The same group can use more than one transport.
Try the switches to change this example network.
InternetWi-Fi AwareBluetooth
Different links. One connected group.
Internet reaches Jo across the world. Wi-Fi Aware and Bluetooth connect nearby members. Updates can travel across these links in the same mesh.
On a plane.
Chat and share with nearby companions without an internet connection, using the onboard radio settings permitted for your flight.
At a match or festival.
Use nearby links to stay in touch with your group when cellular service is crowded or unavailable.
When infrastructure is down.
Nearby devices can exchange updates without working internet or cellular towers, as long as a path remains between them.
Nearby means within radio range. Wi-Fi Aware and Bluetooth connect supported devices directly, without a router, internet connection, or cell tower. Reach depends on the devices, distance, and surroundings. A remote member still needs an internet path into the group.
One group.
More than one way through.
Your devices sync as a mesh. Everyone in a group chat doesn’t need a direct connection to everyone else.
Members of the same chatEncrypted updates
A different path, the same group.
Alex goes offline. The route through Sam still reaches Jo and Lee. You don’t need a direct connection to either of them.
Connected through your group. Whispurr passes encrypted chat updates between participating devices. A path through other members can keep the group in sync. If the group splits with no route between devices, updates can sync again when they reconnect.
Peer to peer, with benefits.
Messages don’t have to wait
for everyone to be online.
Courier is an optional cloud service. Direct delivery needs an online path between chat members; Courier holds encrypted updates so you can send now and others can receive them later.
The conversation continues.
Alex replies through Courier. Sam receives the update while your device is offline.
More timely notifications.
Courier can trigger a notification without the sender staying online. The recipient still needs connectivity; a fully offline device receives updates when it reconnects.
Optional. Recommended for everyday chats. Enable Courier when convenient delivery matters and a central service fits your security needs. For highly sensitive conversations, such as a journalist talking to a whistleblower, consider leaving it off. Peer-to-peer delivery also has privacy tradeoffs; it is not a guarantee of anonymity.
Optional · Backup
Keep a copy.
Keep the keys.
Backup keeps an encrypted copy of your history with a provider, so you have another source for recovery if a device is lost.
Recover on an authorized device.
Download the encrypted history and decrypt it on your device using the required recovery credentials.
Courier delivers. Backup preserves. They are separate choices for each conversation. Turning on Courier does not turn on backup. Neither service receives your conversation keys.
A recovery phrase alone is not a copy of your history. Keep your recovery credentials safe, and make sure another device or a backup has the data you need.
Cloud services are currently in development. Keep another recoverable copy of important data.
Whispurr Projector
Your photos. Your videos.
A screen to share them.
Send photos and videos to a device running Projector. Zoom in, pan around, and control playback from your phone—in real time. Have fun with it.
Press play. Watch together.
Send a video to the other screen and control playback from your phone.
Pass around the moment, not your phone. Look through a trip’s photos, get a closer look at a favorite shot, or watch a video together. Projector connects over an encrypted peer-to-peer session.